Câu 1/22
42 từ
EASY
HARD
00:00/00:22
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Hi
everyone
-
today
I'm
going
to
be
talking
about
the
origins
of
ceramics
.
So
,
first
of
all
.
Let's
start
off
with
-
what
is
a
ceramic
?
Well
,
generally
speaking
.
Ceramics
are
what
you
get
when
you
apply
heat
to
certain
inorganic
,
non-metallic
solids
and
then
allow
them
to
cool
.